US Bridges

Shepperson Road over I-25

Good

Natrona County, Wyoming · Casper - Kaycee · Structure no. DFH

Built
1980
45 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
327 ft
2 main spans
Daily traffic
165
2024 count
Owner
State
State Highway Agency

About this bridge

Shepperson Road over I-25 is a steel continuous stringer/multi-beam or girder carrying Shepperson Road over I-25 in Natrona County, Wyoming. It was built in 1980, so it is 45 years old, younger than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 165 vehicles a day, roughly 9% of them trucks, projected to reach 231 by 2043. The structure is 327 ft (99.7 m) long and 35 ft wide.

CarriesShepperson Road
CrossesI-25
LocationCasper - Kaycee
RouteCounty Highway 25
StateWyoming
Coordinates43.35991, -106.3951
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.4 US tons
Inventory rating40.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length327 ft (99.7 m)
Longest span161 ft (49.1 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic165 (2024)
Projected traffic231 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Shepperson Road over I-25 built?

It was built in 1980, making it 45 years old in 2025.

What condition is Shepperson Road over I-25 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Shepperson Road over I-25 carry?

About 165 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Shepperson Road over I-25?

The structure is 327 ft (99.7 m) long with a longest span of 161 ft (49.1 m) and a deck 35 ft wide.

Who owns Shepperson Road over I-25?

It is owned by the State Highway Agency.